大约有 30,000 项符合查询结果（耗时：0.0507秒） [XML]
How to use enums in C++
...es themselves don't have members. What you wrote is the equivalent to std::string.clear. std::string is a type, so you can't use . on it. You use . on an instance of a class.
Unfortunately, enums are magical and so the analogy stops there. Because with a class, you can do std::string::clear to g...
Painless way to install a new version of R?
...I have to adjust the Rprofile.site anyway (using sum contrasts, adding the extra code for Tinn-R, these things), so it's not really extra work. It just takes extra time installing all packages anew.
This last bit is equivalent to what is given in the original question as a solution. I just don't ne...
How to test an SQL Update statement before running it?
...s a repeat of other answers, but it has some emotional support to take the extra step for testing update :D
For testing update, hash # is your friend.
If you have an update statement like:
UPDATE
wp_history
SET history_by="admin"
WHERE
history_ip LIKE '123%'
You hash UPDATE and SET out for tes...
Maximum size of an Array in Javascript
...3e7 takes 1300ms, which is pretty bad
x=4e7 takes 11000ms and allocates an extra 2.5GB of memory
So around 30 million elements is a hard upper limit, because the javascript VM falls off a cliff at 40 million elements and will probably crash the process.
...
How to change href of tag on button click through javascript
...ibute("href", "xyz.php");
return false;
}
</script>
It's one extra line of code but find it better structure-wise.
share
|
improve this answer
|
follow
...
Android Studio with Google Play Services
...he sdk manager and download and install the following files located under "extras": Android support repository, Google play services, Google repository.
Restart android studio and open the build gradle file. You must modify your build.gradle file to look like this under dependencies:
dependencies ...
Why split the tag when writing it with document.write()?
...s a valid escape sequence for /, so why not just use that instead of those string literal escapes for <? E.g. document.write('<script src=foo.js><\/script>');. Also, </script> is not the only character sequence that can close a <script> element. Some more info here: mathia...
Border for an Image view in Android?
...ng is the code that i used to have black border. Note that i have not used extra xml file for border.
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/red_minus_icon"
android:background="#000000"
android:padding="1dp"/...
Convert any object to a byte[]
...for the .Net platform
Binary Serialization
XML Serialization: Produces a string which is easily convertible to a byte[]
ProtoBuffers
share
|
improve this answer
|
follow
...
What is the quickest way to HTTP GET in Python?
... is the quickest way to HTTP GET in Python if I know the content will be a string? I am searching the documentation for a quick one-liner like:
...